JP Labs has invented economical and rapid methods and apparatus for glass lining metal objects, such as steel pipes and chemical reactors, by induction heating. Glass or ceramic powder is coated on the interior of the metal object. The exterior of the metal object is selectively heated in seconds with induction heating. When the metal reaches the desired temperature, the interior glass coating melts. This system will be significantly safer, less expensive, faster, easier to operate, and will require less space. It will also provide a more uniform and defect free coating without any deformation of the metal objects or sagging of the molten glass. Several apparatus and methods are invented for glass lining steel pipes and reactors. The time has come to modernize the century-old process of glass lining with newer, safer and less expensive techniques, materials and equipment and bring the technology to 21 st century. The technology has many other applications such as rust proofing.